Regulating mechanism for pumps



March 12, 1935. J, VAN DARTELEN 1,993,904

l REGULATING MECHANISM FOR PUMPS Filed March 21, 1933 www Patented Mar. 12, 1935 UNITED STATES PATENT 'oFFlcE 1,993,904 REGULATING MECHANISM Fort PUMPS Application March 21, 1933, Serial No.

In the Netherlands July 29, 1932 Claims. (Cl. 1113-11) My invention relates to regulating mechanism for continuously delivering vunvarying quantities of liquid, vapour or gas, this mechanism being of importance for several industries. For

5 instance the device may be used in the synthetic preparation of products by processes in which gases under very high pressure react with each other. Further, vmy invention is of large importance in the artificial silk industry.

'I'he regulating mechanism according to my invention possesses the characterizing feature that the supply pipe and discharge -pipe of the pump `or like iluid conveying means are connected to a common' chamber divided by means of a flexible member into two or more chambers, the said member or element being so arranged that in case of a difference in pressure prevailing in the supply and discharge pipes, the flexible member may close the supply or the dis- 2Q charge pipe either wholly or partly, the distance of the movable member from the planes in which the supply and discharge pipes discharge or the areas of the surface of contact between the exible element or member and the said planes, being adjustable.

According to my invention the movable element or member may consist of a thin membrane arranged between two surfaces into which open respectively the supply and discharge pipes which surfaces are provided on two elements each possessing an opening, these elements being adjustable in a direction substantially perpendicular to the membrane.

The regulating mechanism according to my :I5 invention may also possess the feature that the flange shaped parts of the elements which arev parallel to the membrane are provided with a number of removable rings.

Two constructional forms of the device according to my invention are shown by way of example in the accompanying drawing.

Figure 1 is a vertical section through the device, and

Figure 2 is an elevation' of one of the plates viewed from the inside.

Figure 3 is a vertical section through a second constructional form and Figure 4 is an elevation of one of the plates viewed from the inside.

The arrows in the drawing show the direction in which the liquid or other medium is flowing. The regulating mechanism is arranged in two plates 1 and 2, in which alsothe supply and discharge pipes are arranged respectively. 'Between the plates 1 and 2 a membrane 3 is arranged, consisting e. g. of a plate of non-corrodible metal of about 0.1l mm. thickness. In the plate 1 the supply opening 4 is arranged which discharges between the membrane 3 and the wall of the element 5 hereinafter described. As indi- 5 cated by the arrows the liquid under pressure is drawn through the opening 4 into the space between the membrane 3 and the wall of the element 5, thereupon the liquid flows through the ducts 6 .and 7, the duct 7 communicates 10 with the inlet 18 of a suitable type of pump designated at 16 and4 operated in the usual manner. The outlet-19 lof the pump communicates with the ducts 8 and 9 and the liquid ows through the latter and into the space between 15 the membrane 3 and the wall of the element 10. Finally the liquid leaves the device through outletll. f

The space between the elements 5 and 10 is divided into two narrow spaces so that if a 20 difference in pressure of the liquids in the openings 4 and 11 occurs the membrane will at once cut oi one of these openings.

The elements 5 and 10 are connected to or mounted in the plates 1 and 2 by means ofvscrew 25 thread 12. The flange shaped parts 13 are tted according to Figure 1 with -a number of thin removable rings 14 and by adding to or reducing the number of these rings 14 the distance between the membrane 3 and the surface of 30 the flange shaped part 13 will be diminished or increased so that in this way this distance may be regulated very exactly.

According to Figure 3 the ange shaped part 13 consists of a number of rings 15 which are 35 removable. By removing one or more of these rings the area of the narrow part between the membrane 3 and the flange `shaped part 13 is increased so that the friction of the liquid is decreased. v 40 In both constructions the mechanism is shut off by a small diiference in pressure of the liquid in the openings 4 and 11; further the very irri-- portant advantage is obtained that the sensibility of the mechanism is adjustable. 45

I claimz- 1. A regulating mechanism for continuously delivering unvarying quantities of fluid, vapor, gas and the like, comprising a pump having a uid inlet anda fluid outlet, a chamber common 50 to the inlet and the outlet, a movable member dividing said chamber and having one surface' presented to the iluid ilowing to said inlet and. the"other surface presented to the fluid ow-. ing from said outlet, inlet and outlet members' 55 arranged adjacent said movable member,- -said movable member being actuated in response to diierences in pressure existing in the inlet and outlet or coacting with said inlet and outlet members to control the flow of lluid through said chamber, and means for relatively adjusting the movable member and the inlet and outlet members.

2. A regulating mechanism as'claimed in claim 1 characterized in that said last mentionedmeans is constituted by members adapted to variably space the inlet and outlet members from the movable member.

3. A regulating mechanism as claimed in claim 1 characterized in that the last mentioned means includes members for varying the surface area of the inlet and outlet members presented for coaction with the movable member.

4. A regulating mechanism as claimed in claim 1, characterized in that the last mentioned means includes a screw-threaded mounting for the inlet and outlet members.

5. A regulating mechanism as claimed in claim 1 characterized in that said inlet and outlet members include a plurality of removable rings disposed in close proximity to said removable member.

JOHANNES VAN DARTELEN. 

